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Last updated: 2026-01-15
Substack Notes Scheduler respects your privacy. This extension is designed to operate locally in your browser and only processes data required to provide its single purpose: scheduling and publishing Substack Notes on the user’s behalf.
The extension does not collect personally identifiable information such as name, email address, physical address, location, financial information, health data, or authentication credentials.
The only data processed by the extension is user-created content and settings required for scheduling, including:
Substack Note text created by the user
Drafts and queued Notes
Scheduled posting times
Posting status and history
Preferred posting time settings
All data is created and controlled by the user.
How Data Is Used
User data is used solely to:
Save drafts and scheduled Notes locally
Schedule Notes for future publishing
Publish Notes to the user’s own Substack account at user-defined times
Display posting history and status within the extension interface
The extension does not analyze, profile, or monitor user behavior outside of these functions.
Data Storage
All user data is stored locally in the user’s browser using Chrome’s storage APIs.
No user data is stored on servers controlled by the developer.
Data Sharing
When a user chooses to publish or schedule a Note, the user-created Note content is sent directly to Substack’s servers solely to create a post on the user’s own Substack account while the user is signed in.
The extension does not sell, transfer, or share user data with third parties.
No data is shared for advertising, analytics, or marketing purposes.
Permissions
The extension requests the following permissions:
Storage: to save Notes, drafts, schedules, and settings locally
Alarms: to trigger scheduled publishing at the correct time
Notifications: to inform the user when a Note is successfully posted or fails to post
Host access to substack.com: to publish Notes on behalf of the user
All permissions are used strictly to support the extension’s single stated purpose.
Remote Code and Tracking
The extension does not download or execute remote code.
It does not use analytics services, tracking technologies, fingerprinting, or cookies.
User Control
Users can edit or delete drafts, queued Notes, and posting history at any time within the extension.
Uninstalling the extension removes all locally stored data.
Changes to This Policy
If this privacy policy is updated, the revised version will be published at the same location and the “Last updated” date will be changed accordingly.
If you have questions about this privacy policy or the extension, you can contact the developer at:
contact@rajanand.org